21254590

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{337}}^1$

素因数の和:421

約数の個数: 64

約数和(自身を含む): 47309184

約数和(自身を除く): 26054594

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 53, 70, 85, 106, 119, 170, 238, 265, 337, 371, 530, 595, 674, 742, 901, 1190, 1685, 1802, 1855, 2359, 3370, 3710, 4505, 4718, 5729, 6307, 9010, 11458, 11795, 12614, 17861, 23590, 28645, 31535, 35722, 40103, 57290, 63070, 80206, 89305, 125027, 178610, 200515, 250054, 303637, 401030, 607274, 625135, 1250270, 1518185, 2125459, 3036370, 4250918, 10627295, 21254590]

約数ペア:

[(1, 21254590), (2, 10627295), (5, 4250918), (7, 3036370), (10, 2125459), (14, 1518185), (17, 1250270), (34, 625135), (35, 607274), (53, 401030), (70, 303637), (85, 250054), (106, 200515), (119, 178610), (170, 125027), (238, 89305), (265, 80206), (337, 63070), (371, 57290), (530, 40103), (595, 35722), (674, 31535), (742, 28645), (901, 23590), (1190, 17861), (1685, 12614), (1802, 11795), (1855, 11458), (2359, 9010), (3370, 6307), (3710, 5729), (4505, 4718)]